It was in the early to mid 60's some us of had sisters that had those dolls . I have taken dog toys apart to get the squeaker out of them for rodent squeaks and to use as a coaxer . It is amazing how far a fox or coyote can hear them . They can be taped to the side of your rifle stock so you can squeeze them with the finger tips of your support hand as you sight in on your target . The number of different types of animals that will respond to things like this is surprising . They are not expensive easy to use and not a lot of people , at this time are using them as they are low tech .